Same. Also happened to my brother's account after we thought we'd nuked everything.
God, that is just the WORST concept especially nowadays. I was looking for info on water filtes and found a bunch of ChatGPT comments from 3 months ago on an 8 year old thread shilling for some company. Of course, they were all upvoted to the top of the thread.
I even had a notification of someone just commenting "lol" on an offhand comment I made about Firefly in 2011. As if that needed to be said.